networking/libiproute/ll_proto.c

   1 /*
   2  * ll_proto.c
   3  *
   4  *              This program is free software; you can redistribute it and/or
   5  *              modify it under the terms of the GNU General Public License
   6  *              as published by the Free Software Foundation; either version
   7  *              2 of the License, or (at your option) any later version.
   8  *
   9  * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
  10  */
  11
  12 #include <stdio.h>
  13 #include <arpa/inet.h>
  14 #include <string.h>
  15
  16 #include "rt_names.h"
  17 #include "utils.h"
  18
  19 #if __GLIBC__ >=2 && __GLIBC_MINOR >= 1
  20 #include <net/ethernet.h>
  21 #else
  22 #include <linux/if_ether.h>
  23 #endif
  24
  25 #define __PF(f,n) { ETH_P_##f, #n },
  26 static struct {
  27         int id;
  28         char *name;
  29 } llproto_names[] = {
  30 __PF(LOOP,loop)
  31 __PF(PUP,pup)
  32 #ifdef ETH_P_PUPAT
  33 __PF(PUPAT,pupat)
  34 #endif
  35 __PF(IP,ip)
  36 __PF(X25,x25)
  37 __PF(ARP,arp)
  38 __PF(BPQ,bpq)
  39 #ifdef ETH_P_IEEEPUP
  40 __PF(IEEEPUP,ieeepup)
  41 #endif
  42 #ifdef ETH_P_IEEEPUPAT
  43 __PF(IEEEPUPAT,ieeepupat)
  44 #endif
  45 __PF(DEC,dec)
  46 __PF(DNA_DL,dna_dl)
  47 __PF(DNA_RC,dna_rc)
  48 __PF(DNA_RT,dna_rt)
  49 __PF(LAT,lat)
  50 __PF(DIAG,diag)
  51 __PF(CUST,cust)
  52 __PF(SCA,sca)
  53 __PF(RARP,rarp)
  54 __PF(ATALK,atalk)
  55 __PF(AARP,aarp)
  56 __PF(IPX,ipx)
  57 __PF(IPV6,ipv6)
  58 #ifdef ETH_P_PPP_DISC
  59 __PF(PPP_DISC,ppp_disc)
  60 #endif
  61 #ifdef ETH_P_PPP_SES
  62 __PF(PPP_SES,ppp_ses)
  63 #endif
  64 #ifdef ETH_P_ATMMPOA
  65 __PF(ATMMPOA,atmmpoa)
  66 #endif
  67 #ifdef ETH_P_ATMFATE
  68 __PF(ATMFATE,atmfate)
  69 #endif
  70
  71 __PF(802_3,802_3)
  72 __PF(AX25,ax25)
  73 __PF(ALL,all)
  74 __PF(802_2,802_2)
  75 __PF(SNAP,snap)
  76 __PF(DDCMP,ddcmp)
  77 __PF(WAN_PPP,wan_ppp)
  78 __PF(PPP_MP,ppp_mp)
  79 __PF(LOCALTALK,localtalk)
  80 __PF(PPPTALK,ppptalk)
  81 __PF(TR_802_2,tr_802_2)
  82 __PF(MOBITEX,mobitex)
  83 __PF(CONTROL,control)
  84 __PF(IRDA,irda)
  85 #ifdef ETH_P_ECONET
  86 __PF(ECONET,econet)
  87 #endif
  88
  89 { 0x8100, "802.1Q" },
  90 { ETH_P_IP, "ipv4" },
  91 };
  92 #undef __PF
  93
  94
  95 const char * ll_proto_n2a(unsigned short id, char *buf, int len)
  96 {
  97         int i;
  98
  99         id = ntohs(id);
 100
 101         for (i=0; i<sizeof(llproto_names)/sizeof(llproto_names[0]); i++) {
 102                  if (llproto_names[i].id == id)
 103                         return llproto_names[i].name;
 104         }
 105         snprintf(buf, len, "[%d]", id);
 106         return buf;
 107 }
 108
 109 int ll_proto_a2n(unsigned short *id, char *buf)
 110 {
 111         int i;
 112         for (i=0; i<sizeof(llproto_names)/sizeof(llproto_names[0]); i++) {
 113                  if (strcasecmp(llproto_names[i].name, buf) == 0) {
 114                          *id = htons(llproto_names[i].id);
 115                          return 0;
 116                  }
 117         }
 118         if (get_u16(id, buf, 0))
 119                 return -1;
 120         *id = htons(*id);
 121         return 0;
 122 }